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Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionBⅠ.Materialanalysis本课是九年级第一单元第二话题的第二课时，主活动是1a和2。本课通过谈论各国的人口数量，复习比较级的基本句型，学习高位数的表达。1b通过连线题，训练学生听懂高位数的能力。1c通过把对话转换为段落来巩固1a的内容。2重点学习高位数的读法。3让学生通过读图来操练高位数的读法。为了降低1a和3的难度，建议将2调整到1a前，作为一个读前的活动。通过谈论各国人口的现状，引导学生树立正确的人口观念。 Ⅱ.Teachingaims1.Knowledgeaims：掌握本课的重点词汇和短语，复习形容词比较级的用法，继续学习数字表达。2.Skillaims:能听懂高位数字，并作出正确判断。能通过整合对话内容，提升综合语言运用能力。3.Emotionalaims:(optional)增强学生对人口问题的认识，了解各国的人口现状。增强学生关注社会的意识。
4.Cultureawareness:(optional)通过对比发达国家和发展中国家的人口增长情况，引导学生树立正确的人口观念。Ⅲ.Thekeypointsanddifficultpoints1.Keypoints:Wordsandphrases:population,billion,increase,reach,Russia,luckily,policy,measureindeveloped/developingcountries,haveapopulationof…,increaseby,carryout,theone-childpolicySentences:(1)Itsaystheworldhasapopulationof6.8billion.(2)Itisincreasingby80millioneveryyear.(3)Whichcountryhasthelargestpopulation?(4)—What’sthepopulationoftheUSA.?—It’s…(5)Soitis.(6)Thepopulationproblemismoreseriousindevelopingcountries.Grammar:GoonlearningandusingPresentPerfect.2.Difficultpoints：能更快更好的听懂和朗读高位数字。能正确使用数字表达各国的人口现状。
Ⅳ.Learningstrategies通过1b的匹配练习，提升听的语言技能。通过1a的朗读训练，能够准确、清楚地进行朗读，培养语感和自信心。通过2的数字练习，能够抓住数字的表达规律。通过3的图表描述，能够评价自己的学习情况，找出不足。Ⅴ.Teachingaids单词卡片（如：population，billion等）；多媒体课件；录音机；世界人口示意图；小黑板。Ⅵ.TeachingproceduresStage(timeperiod)InteractionpatternsTeacheractivityStudentactivityRemarks1Revision（2-3mins）GroupworkGreeting.T:Hello,boysandgirls!T:Nowlet’shaveacompetitioningroups.Makenewsentencesbyusingthesewords(“just”,“never”,“yet”,“ever”and“already”)withintwominutes.…Greeting.Ss:Hello…S1:Ihavealreadyfinishedmyhomework…S2…可以播放数字歌，来复习简单的数字。
2Lead-in(2-3mins)IndividualworkPresenttheinformationaboutpopulationindifferentcountries.T:Excellent！Youhavealreadysearchedfortheinformationaboutthepopulationindifferentcountries,haven’tyou?Ss…T:OK,who’dliketobethefirstonetoshareyourinformation?Volunteers?Presenttheinformationaboutpopulationindifferentcountriestheyhavecollectedbeforeclass.Ss:Yes,wehave.S1:Chinahasapopulationof1.3billion.S2:Indiahas…培养学生整理信息，传达信息的能力。建议：此处可以中英文混用。3Pre-listening(10mins)ClassactivityStep1:Presentthenewwords.T:That’sright.Chinahasapopulationof1.3billion.Butitisincreasingbyabout10millioneveryyear.HowlargeChinesepopulationis!Luckily,Chinahascarriedouttheone-childpolicytocontrolit.DoyouknowwhatthepopulationofRussiais?Trytounderstandthenewwordsaccordingtotheteacher’sexplanation.…教师应板书所学生词和短语，以便学生整体把握重点。
individualwork.Ss:143million.T:Yes,thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.Ss:…Step2:GetSstoreadandguidethemtomastertherulesabouthowtoreadthenumbers.Askthemtopayattentiontothepronunciation.T:Chinahasapopulationof1.3billion.Butdoyouknowhowtoexpressthelargenumberslike1300000000.Firstlet’slookattheblackboard.2183065366(LeadSstoreadnumbersfromthesimplenumberstolargeoneslikemillionandbillion。)S1:Twohundredandeighteen.Ss:143million.…Readthenumbers,masterhowtoexpressthelargenumbersaccordingtotheteacher’sexplanation.S1:Twohundredand教师可以根据实际情况增加数字练习环节。在活动2中要引导学生注意并列词组间的语音语调。
S2:Threehundredandsix.S3:Fivethousand,threehundredandsixty-six.(Concludetherulesabouthowtoreadnumbers.)T:Now,lookatthesenumbers.Canyoureadthem?73654787360627198764501(GuidetheSstolearntherulesofreadingnumbers.Thenpractice.)S4:736547sevenhundredandthirty-sixthousand,fivehundredandforty-seven.T:Now,Iwillasksomeotherstudentstoreadothernumbers.S5:8736062eightmillion,sevenhundredandthirty-sixthousandandsixty-two.eighteen.S2:Threehundredandsix.S3:Fivethousand,threehundredandsixty-six.…S4:736547sevenhundredandthirty-sixthousand,fivehundredandforty-seven.…S5:8736062eightmillion,sevenhundredandthirty-six
S6:7198764501sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandone.T:Youaregreat.Mostofyouhavemasteredhowtoreadthenumbers.Pleaselookatthenumbersin2.Readthemtogether.…thousandandsixty-two.S6:7198764501Sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandone.Ss…4While-listening(10mins)IndividualworkStep1:GettheSsreadyforlistening.Thenlistenandfinish1b.T:Therearesomanypeopleintheworld.Right?What’sthepopulationoftheworld?Ss…T:Maybesomeofushavelearntaboutit.OK.,let’slistentothetapeandfinish1b.…Listenandfinish1b.S1:Theworldhasapopulationof6.8billion.S2:Chinahasapopulationof1.3billion.S3:Indiahasapopulationof1.1billion.S4:TheUSAhasapopulationof309million.回答连线题时，要求学生使用完整的句子作答，有助于培养语感，更好地运用短语和句子。
ClassactivityT:It’snotdifficult.Nowshareyouranswerswithothers.Whocantry?Step2:Listento1aagainandpayattentiontothepronunciationandintonationandthenactout1a.…Listento1aandpayattentiontothepronunciationandintonationandthenroleplay1a.学习语言，读的过程很重要，教师可以根据班级情况，分配朗读的方式和时间。5Post-listening(15mins)GroupworkIndividualworkStep1:Read1aagain,gettheSstounderlinetheusefulexpressionsanddiscusstheusageofthemingroups.T:Readtheconversationagain,underlinethedifficultphrasesandsentences.Youcanlookuptheminthedictionaryoraskyourclassmatesandteacherforhelp.Step2:Finish1caccordingto1a.T:Nowlet’sread1aandcompletethepassagein1c.Readtheconversationthoroughlyandunderlinethepointstheydonotunderstand.…Finish1cafterreading1a.小组内不能解决的问题，组间可以互相帮助解决,老师可以适时适当的点拨。该环节教师应提供参考资料和方法指导，以提升学生的自学能力和克服难关的意识。
…T:OK,whocanshareyouranswerswithus?…6Finishingtask3GroupworkProject:Workingroupsanddiscusstheinformationofthechartin3.T:Lookatthechartin3anddiscussthem.Thequestionscanhelpyou....…Workingroupanddisusstheinformationofthechartin3.教师合理安排该部分，不仅可以巩固前面所学，提高学生的口语水平，还能增强学生对人口现状的了解。如果时间充裕，可以在课堂上汇报一下讨论结果；如果时间不够，也可以安排成书面作业。7Summarizingandassigninghomework(3-5mins)ClassactivityStep1:Summarizetheimportantexpressionsingroups.Step2:HMK:Writeapassageaboutthecurrentsituationofpopulation.Goovertheusefulexpressionslearntthisclass.HMK:Writeapassageaboutthesituationofpopulation.
Ⅶ.BlackboarddesignThepopulationindevelopingcountriesisgrowingfaster.SectionBWordsandphrases:Sentences:billion,increase,reach,RussiaThepopulationproblemismoreseriousindevelopingcountries.have/hasapopulationof...Itsaystheworldhasapopulationof6.8billion.Increaseby—What’sthepopulationoftheUSA?thedeveloped/developingcountry—309million.carryout,Soitis.theone-childpolicy1300000000218306536673654787360627198764501
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